TOKYO, March 27 (Reuters) - Japan's Nikkei share average

fell on Thursday, weighed down by worries about the impact of

U.S. President Donald Trump's auto tariff announcement, with

automakers leading the losses.

By 0022 GMT, the Nikkei fell 0.7%, trimming some of

its more than 1% losses earlier in the session.

The broader Topix slipped 0.45% to 2,800.37.

Trump on Wednesday unveiled a 25% tariff on imported cars

and light trucks starting next week, widening the global trade

war he kicked off upon regaining the White House this year in a

move auto industry experts expect will drive up prices and

stymie production.

Toyota Motor ( TM ) lost 2.5% and Honda Motor ( HMC ) was

down 2.1%, while Nissan Motor ( NSANF ) slipped 3.6%.

Subaru lost 5.6% to become the worst performer on

the Nikkei.

The index for automakers lost 2.26%.